The Congregation of Eastern Churches for Unity is an institution established by the Pope, Primate of the Unity Church. The mandate and mission of the Congregation is to seek unity among the Eastern Churches in particular and to work for unity among the other world Churches. Altimetry, the main mission of the Congregation is to promote for Unity among Christians.   
  
One of its mission is to be in contact with the Eastern Churches and to build bridges for the sake of assisting their development, protecting their rights and to help alongside the liturgical, disciplinary and spiritual patrimony of the Eastern Rite |Churches, and to protect the heritage of the various Eastern Christian traditions.

The Congregation is headed by a Cardinal designated by the Pope. He is assisted by appointed Bishops and Priests. Members by right are the Patriarchs and the Major Archbishops of the Eastern Churches.

The Congregation recognise all the  complex issue rooted in shared faith and tradition, with a focus on the concept of "sister churches" and a desire for greater communion, while acknowledging distinct liturgical rites and theological emphases. Nevertheless, it sees not but to  maintain cordial relations with all Christian churches and communities and participates in joint efforts with them to recover the visible unity of all God’s people. 

The Congregation is responsible for all matters pertaining to the Eastern Churches, relations between the Western and Eastern Churches, and all issues arising from the implementation of the code of canons of the Eastern Churches and the production of liturgical texts. These faculties are exercised without derogating from the traditional jurisdictional rights of Patriarchs and their Holy Synods in such matters.